vagrant cffi install issues

[emarsman]

https://groups.google.com/forum/#!topic/openxc/jfx7EYx1PNU

New incarnation: ==> default: Running setup.py install for cryptography: finished with status 'error' ==> default: Complete output from command /usr/bin/python -u -c "import setuptools, tokenize;file='/tmp/pip-build-FlpXZi/cryptography/setup.py';f=getattr(tokenize, 'open', open)(file);code=f.read().replace('\r\n', '\n');f.close();exec(compile(code, file, 'exec'))" install --record /tmp/pip-wu2rhH-record/install-record.txt --single-version-externally-managed --compile: ==> default: c/_cffi_backend.c:15:17: fatal error: ffi.h: No such file or directory ==> default: compilation terminated. ==> default: Traceback (most recent call last): ==> default: File "", line 1, in ==> default: File "/tmp/pip-build-FlpXZi/cryptography/setup.py", line 321, in ==> default: **keywords_with_side_effects(sys.argv) ==> default: File "/usr/lib/python2.7/distutils/core.py", line 112, in setup ==> default: _setup_distribution = dist = klass(attrs) ==> default: File "/usr/lib/python2.7/dist-packages/setuptools/dist.py", line 221, in init ==> default: self.fetch_build_eggs(attrs.pop('setup_requires')) ==> default: File "/usr/lib/python2.7/dist-packages/setuptools/dist.py", line 245, in fetch_build_eggs ==> default: parse_requirements(requires), installer=self.fetch_build_egg ==> default: File "/usr/lib/python2.7/dist-packages/pkg_resources.py", line 576, in resolve ==> default: dist = best[req.key] = env.best_match(req, self, installer) ==> default: File "/usr/lib/python2.7/dist-packages/pkg_resources.py", line 821, in best_match ==> default: return self.obtain(req, installer) # try and download/install ==> default: File "/usr/lib/python2.7/dist-packages/pkg_resources.py", line 833, in obtain ==> default: return installer(requirement) ==> default: File "/usr/lib/python2.7/dist-packages/setuptools/dist.py", line 294, in fetch_build_egg ==> default: return cmd.easy_install(req) ==> default: File "/usr/lib/python2.7/dist-packages/setuptools/command/easy_install.py", line 608, in easy_install ==> default: return self.install_item(spec, dist.location, tmpdir, deps) ==> default: File "/usr/lib/python2.7/dist-packages/setuptools/command/easy_install.py", line 638, in install_item ==> default: dists = self.install_eggs(spec, download, tmpdir) ==> default: File "/usr/lib/python2.7/dist-packages/setuptools/command/easy_install.py", line 828, in install_eggs ==> default: return self.build_and_install(setup_script, setup_base) ==> default: File "/usr/lib/python2.7/dist-packages/setuptools/command/easy_install.py", line 1105, in build_and_install ==> default: self.run_setup(setup_script, setup_base, args) ==> default: File "/usr/lib/python2.7/dist-packages/setuptools/command/easy_install.py", line 1096, in run_setup ==> default: raise DistutilsError("Setup script exited with %s" % (v.args[0],)) ==> default: distutils.errors.DistutilsError: Setup script exited with error: command 'gcc' failed with exit status 1 ==> default:
==> default: ---------------------------------------- ==> default: Command "/usr/bin/python -u -c "import setuptools, tokenize;file='/tmp/pip-build-FlpXZi/cryptography/setup.py';f=getattr(tokenize, 'open', open)(file);code=f.read().replace('\r\n', '\n');f.close();exec(compile(code, file, 'exec'))" install --record /tmp/pip-wu2rhH-record/install-record.txt --single-version-externally-managed --compile" failed with error code 1 in /tmp/pip-build-FlpXZi/cryptography/

Can fix by installing libffi-dev (sudo apt-get install libffi-dev).

[emarsman]

easy fix

[fcojpolo]

Sorry, It does not work for me, I´m running "bootstrap.sh" using a Native Host OS (Ubuntu 16.04) with same problem.

Instead of use only "sudo apt-get install libffi-dev" I used "sudo apt-get install build-essential libssl-dev libffi-dev python-dev" and it works for me.

Source : https://cryptography.io/en/latest/installation/#building-cryptography-on-linux

BR

[emarsman]

Since you are running directly on Native Ubuntu, did you get the message about using Vagrant on linux (from https://github.com/openxc/vi-firmware/blob/master/script/bootstrap/common.sh#L175)? Vagrant is the preferred environment.

The remaining packages you list are already installed in the Vagrant environment.